Joint for locomotive exhaust-pipes.



J'. J. JONES.

JOINT FOR LOGOMOTIVE EXHAUST PIPES.

APPLICATION FILED APR, 2, 1 913.

1,076,289. Patented 0@t.21,1913. Y

FIG-1 3a,

3a 1 3a 4a,

v IN NTOR.

gimm, 1771 Schenectady, in the county of Schenectadyi I JOSHUA J. JONES, OiFfiCHE-NEGTADY, NEW YORK.

.J OINT FOR IOCOllEOT'IVE EXHAUST-PIPES.

Specification of Letter-s Patent.

Application filed April 2, 1913. Serial No. 758,481.

To all whom it may concern:

Be it known that I, JOSHUA J. Jones, of

and State of New York, have invented a certain new and useful Improvement in Joints for Locomotive Exhaust-Pipes, of

which improvement the following is a specification.

My invention is more particularly designed for application in connection with the exhaust pipes of locomotives of the articulatedor mallet type, in which the forward (ordinarily low pressure) cylinders are carried upon a truck frame which is adapted to swivel relatively to the boiler, and in which, consequently, it becomes necessary to make an articulated joint between the section of the exhaust pi e which is supported upon the truck and t e upper section thereof, which is located, in the usual manner, in the smoke box of the boiler.

The object of my invention is to provide means whereby the insertion of packing in the stuffing box of the joint may be readily and conveniently effected, and the insertion of the packing may be made when the locomotive is assembled and in readiness for the installation of the exhaust pipe and nozzle in the smoke box, under which conditions it is extremely difficult to insert the acki-ng from beneath the smoke box, as has een the practice heretofore.

The improvement claimed is hereinafter fully set forth.

In the accompanying drawings: Figure 1 is a vertical longitudinal central section through the smoke box of an articulated locomotive, illustratingan embodiment of my invention; and, Fig. 2, ahorizcntal section, on the line a a of Fig. 1.

My invention isherein exemplified as applied in the means for connecting the lower section, 1, of the exhaust pipe of an articulated or mallet locomotive, which, as

above stated, is supported upon the truck, and the up or section, 1, which is .located lie of the smoke box, 2, of the boiler, and to the upper end of which the exhaust nozzle, 1, is attached. Inthe practice of my invention, I provide a cylindrical thimble casing, 3, the bore of which extends continuously from one of its ends to the other, so that it is open throughout its entire internal diameter at each end. A

circumferential flange, 3", is formed on the 5 lower end of the thimble casing, through which flan'ge. it is secured by bolts, 3, to the inside of the smoke box, 2, at the bottom thereof, and preferably in line axially with the stack, 2*.- A similar-flange, 3, .is formed on the upper end of the thimble casing, for the attachment .thereto of the upper section,

, 1, of the exhaust pipe, the lower flange, 1

of which, alone 'c onstitutes the top closure of the bore of the thimble casing. The rear end of the lower section, 1, of the exhaust. pipe, is upwardly curved, and its upper end 1, of smaller diameter than the bore of the 'thimble casing, the center of which ball is in line axially with the casing, and which is pivotally suspended therein by a supporting ball flange ring or socket, 4, bored out to fit 3 of the thimble casing, by studs, 4:, a spacing gasket, 1*, beinginterposed between the flange, 3 and the ring, 4.

.A centering ring, 5, spherically bored in conformity with ,the surface of the ball, 1,

ball and the thimble casing, 3, the top .1 the centering ring fitting against the flange, 1, on the bottom of the up er exhaust pipe section, 1", which is secure to the upper flange, 3, of the thimble casing, by studs, 6, passing through said flange and through the flangefl. A packing adjusting ring, 7, is .fitted between the ball, 1, and thirnble casing, 3, on-the top of the flange ring or socket, 4:,and is vertically adj-11stable by screws, 7*, engaging the ring, 4, and accessible from the lower side of said ring, to efl'ect compression, asdesired, of a body of suitable packing, 8, which is interposed in the annular space between the rings, 5 and 7, and between the ball, 1, and thimble casing, 3. The thimble casing, 3,, and rim, 4, constitute a stufiing box, by means of w ich a steam tight swiveling joint betweenthe lower and upper sections of the exhaust pipe is eflectively maintained.

.By reason of the difficulty of access, from beneath the smoke box, to any form of stufling 'box applied at the connection of the exhaust pipe sections, due. to the presence of adjacent. machine elements, the insertion of the packing from the inside of the smoke box, after the locomotive has been assem- .bled and before finallys'ecuring' in place the exhaust pipe and other smoke box fixtures,

Patented Oct. 21, 1913.

the ball, 1, and secured to the bottom flange,

is fitted'between the upper portion of said is formed into a ball or section of a sphere,

is verv desirable, and such insertion is readily effected in the use of my invention. After ascertaining that the spacing gasket, is of proper thickness to insure easy and close fitting joints between the ball, 1, and the rings, t and 5, the flange ring, 4, is lowered a short distance, by loosening the studs, 4, and the packing adjusting ring is also placed in its lowest position against the flange ring. After removing the upper exhaust pipe section and the centering ring, 5, the packing, 8, is properly fitted in from above; the ring, 5, is then replaced and the upper exhaust pipe section, 1*, securely bolted to the thimble casing, after which the flange ring, 4, isfastened to the. thimble casing, and the screws, 7, adjusted, if necessary, to impart the requisite tightness to the 'oint. j

1 While my invention is herein set forth as applied in connection with an exhaustpipe through which steam is discharged from the low pressure cylinders of an articulated compound locomotive, it will be obvious to those familiar with locomotive construction that it may, without change of structural or operative principle, be similarly applied in connection with a receiver pipe through which steam is carried from the high pressure tothe low pressure cylinders, the difference being merely in the location of the joint in an. intermediate smoke box in thelatter case, instead of in the ordinary smoke box at the front of the boiler, as in the instance illustrated.

I claim as my invention and desire to secure by Letters Patent: 7

1. The combination-of a cylindrical thimble casing, which is open throughout the diameter of its bore at each end, and is adapted to be secured at its bottom to the.

inside of a locomotive smoke box, a'lower exhaust pipe section fitting in said casing, with the provision of surrounding space for the reception of packing, and an upper exhaust pipe section secured detachably to,

and constituting the entire upper closure of,

thetop of said casing.

2. The combination of a cylindricalthimble casing, entirely open'at each end, and adapted .to be secured at itsbottom to the inside of a locomotive smoke box, a lower exhaust pipe section fitting in said casing, with the provision of surrounding space for the reception of packing, anupper exhaust pipe section secured detachably to the top of said casing, and a supporting ring, fitting in said casing, around the lower exhaust pipesection, and secured detachably to the bottom of said casing.

3. The combination of a cylindrical thimble casing, entirelyzopen at each end, and having abottom flange for attachment to the inside of a locomotive smoke box, and a top flange for. attachment to an exhaust pipe section, an upper exhaust pipe section secured detachably to sald top flange, alower exhaust pipe section fitting in the casing,-

with the provision of surrounding space for the reception of packing, a supporting ring fitting in the casing around said-lower exha'ust pipe'section, and a spacing gasket interposed between said ring and the bottom flange of the thimble casing.

4. The combination of a cylindrical thimble casing entirely open at each end, and adapted to be secured at its bottom to the inside of a locomotive smoke box, a lower exhaust pipe section fitting in said casing, with the provlsion of surrounding space for the reception of packing, an upper ex-.

haust pipe section secured detachably to the top of said casing, a snfiporting ring fitting in said casing, aroun the lower exhaust pipe section, and secured detachably to the bottom of the casing, and a packing adjusting ring surrounding the lower exhaust pipe section above the supporting ring.

5. The combination .of a cylindrical thimble casing, entirely open at each'end, and adapted. to be secured at its bottom to the inside of a'locomotive smoke box, a lower exhaust pipe section fitting in said casing, with the provisionof surroundingspace for the reception of packing, an upper exhaust pipe section secured detachably to the top of said casing, a supporting ring fitting in said casing, around the lower exhaust pipe section, and secured detachablyto the bottom of the casing, a packing adjusting ring surrounding the lower exhaust pipe section above the supporting ring, and adjusting screws engaging the supporting ring and bearing on the packingfadjusting ring.

6. The combination of a cylindrical thimble casing entirely open at each end, and adapted to be secured at its bottom to the inside of a locomotive smoke box, an upper exhaust pipe section secured detachably to the top of said casing, a lower exhaust pipe section having a ball. on its upper end fitting in said casing, with the provision of surroundingspace for the reception of packing, a spherically bored centering ring the casing and the periphery of the ball and abutting the bottom of the upper exhaust pipe section, and a similarly bored supporting ring fitting around the ball, below its center, andsecured detachably to the .bottom of the casing.

7. The combination of a cylindrical thimble casing, entirely open at each end, and adapted to be secured at its bottom to the inside of a locomotive smoke box, anupper exhaust pipe section'se'cured detachably to the top of sand casing, a lower exhaust pipe section having a ball on its upper end fit- .ting in said casing, with the provision of surrounding space for the reception of packfitting ing, aspherically bored centering ring fitting the casin and the periphery of the porting ringg'and adjusting screws engagball. and abuttlng the bottom of the upper 'ingthe supporting ring and bearing on the exhaust pipe section, a similarly bored 'suppacking adjusting ring. 7 porting ring fitting around the ball, below JOSHUA .J. JONES.

5 its center, ,and secured detachably to the 1 Witnesses:

bottom of the casing, a packing adjusting WILLARD J. VEDDER, ring surrounding theball above the sup- FRANK W. WELCH. 

